Loudspeaker



FIG. 1 is a right side-back side perspective view of a loudspeaker, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front-right perspective view thereof; and,

FIG. 7 is a back elevational view thereof. 

The ornamental design for a loudspeaker, as shown and described. 